![]() Each includes a native library of component models as well as the ability to import third-party component models. Both PSpice and LTSpice are such environments, owned by Cadence Design Systems and Analog Devices respectively. They also integrate a range of possible measurements and post-simulation processing tools. Modern simulators generally incorporate a schematic creation tool in which the user can construct circuits using symbols with associated netlist models, and the simulator will generate a netlist based on the schematic. ![]() A SPICE interpreter takes text-based ‘netlists’ that include the parameters of each circuit components as well as their nodes, then translates them into matrices, differential equations, and other mathematical relations based on Kirchoff’s Laws and other physical constraints. Many current industry tools for simulation are based around the SPICE (Simulation Program with Integrated Circuit Emphasis) environment. Simulation can be used to proof basic designs, evaluate the effects of both nominal component values and variations due to parasitics, saturation and other real effects, and predict the design’s response to noise and other non-ideal inputs. ![]() During the product development process, simulation is a key tool for analyzing the behavior and performance of complex circuits.
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